25290229 has 4 divisors (see below), whose sum is σ = 25302060. Its totient is φ = 25278400.

The previous prime is 25290211. The next prime is 25290247. The reversal of 25290229 is 92209252.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (25290211) and next prime (25290247).

It can be written as a sum of positive squares in 2 ways, for example, as 21298225 + 3992004 = 4615^2 + 1998^2 .

It is a cyclic number.

It is not a de Polignac number, because 25290229 - 2¹¹ = 25288181 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25290229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25290259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1714 + ... + 7315.

It is an arithmetic number, because the mean of its divisors is an integer number (6325515).

Almost surely, 2^25290229 is an apocalyptic number.

It is an amenable number.

25290229 is a deficient number, since it is larger than the sum of its proper divisors (11831).

25290229 is an equidigital number, since it uses as much as digits as its factorization.

25290229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11830.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 25290229 is about 5028.9391525450. The cubic root of 25290229 is about 293.5289361985.

The spelling of 25290229 in words is "twenty-five million, two hundred ninety thousand, two hundred twenty-nine".